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Finding the Fourth Proportional to 73,133.25, 100,921.46 and 40,869.87

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Solution

The fourth proportional to 73,133.25, 100,921.46 and 40,869.87 is: 56,399.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,133.25 : 100,921.46 = 40,869.87 : x
  2. Step 2: Convert to fraction form
    73,133.25/100,921.46 = 40,869.87/x
  3. Step 3: Cross multiply
    73,133.25x = 100,921.46 × 40,869.87
  4. Step 4: Simplify right side
    73,133.25x = 4,124,646,746.06
  5. Step 5: Solve for x
    x = 4,124,646,746.06/73,133.25
  6. Step 6: Final answer
    x = 56,399.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.